Valve-spring lifter



S t, I l 641 618 p o'. BLOMBERG VALVE srnme LIFTER I v v Filed Sept. 4.1926 2 sheets-sheet 1 v 1,641,618 o. BLOMBERG VALVE SPRING LIFTER FiledSept 4-. 192a 2 snaats fihe t 2;

Patented Sept. 6, 1927.

OTTO BLOIVIBERG, OF CHICAGO, ILLINOIS.

VALVE-SPRING LIFTER.

Application filed September 1, 1926. Serial No.-133',539.

a valve spring Another object is to provide a valve spring lifter havinga member engageable with a motor part such as the valve guide and whichis arranged to prevent injury to such part when it is given a pivotal,movement thereon for placing the valve spring in position.

Another objectis to'provide a va lve spring lifter having the variousparts cooperate in an improved manner to meet all of the requirementsunder service conditions. These and other objects are accomplished 25 bymeans of the arrangement disclosed on the accompanying sheets ofdrawings, in which j Figure 1 is a front elevationof a valve springlifter embodying my invention;

Figure 2 is a view taken in the plane of line 22 of Figure 1 of the sametool;

Figure 3 is a top plan view ofsaid valve spring lifter;

Figure 4 is another front view of the valvespring lifter showing theupper arm or member thereof in a reversed position'to enlarge theeffective size of the tool:

Figure 5 is an enlarged, sectiona view taken in the plane of linee 5 7-5ofFig- 1.;-

Figure 6 is a front elevation of thevalve spring lifterillustrating thecompression of a valve spring to release a valve of an intermilcombustion engine, the latter ofwhich is 1 shown in. section; and

Figure 7 is a simi slide rod of the valve lifter reversed in'posi-. tionwith its rounded end in engagement with the valve guide for placingthevalve spring in position before the valve is in serted. w v 1 a ,7

The-various novel features of, the invention will be apparent from thefollowing description and drawings and will beflparticularly pointed outin the appended claims. Reterri'ng tothe figures ofthefdrawings 1,detail it will be noted that the valve springhfter includes a mainsupporting bar 10 to which a two pieced upper arm or member 11 issecured by bolts 12. The piece 13 of the two pieced member 11 is the onewhich is directly securedto the support 10, and the other piece 14 vofthetwo pieced member is secured to the member 13 by bolts or screws Asshown in Figure 1, the member 11 is secured to the member 10 in oneposition and in Figure 4 it is securedin a reverse po- MEM wire.

sition to enlarge the effective size of the tool. I

Slidably mounted in a slot 416 in the enlarged end 16 of the member 14-is a rod 17 One end of the rod 17 istapered to a point as shown at 18for engaging the top of a valve 19 for holding the latter downas thevalve spring- 20 iscompressed or raised for I I releasing the segmentalvalve spring collar key 21 which normally is seated in a groove in thelower end of the valve stem 22, as shown particularly in Figure 6. Theslide rod 17 normally is releasably locked in adjusted position by abolt'23, having an en-' v larged slot 24s for receiving the rod 17 Thebolt '23 is drawn into a rod locking position by a winged nut 25 Ineffect, therefore, the locking bolt 23-is a wedge member and has a,wedging action upon the slide rod 17 for locking the latter in position.Preferably, a split, circularspring 26, having its free ends opposite,as is usual in thattype of spring, is interposed between the winged nut25 and the head 16 to prevent said rod 17 from sliding when the wingednut is loosened preparatory to adjustment of the slide rod. In otherwords, when the winged nut 25 is loosened the spring 26 acts in a'mannerto prevent slippage of theslide rod 17. In addition to formingv a quickreleasing meansfor a ready adjustment of the rod 17, the wedge lockingmember 23 also serves to permit a slippageiqof the rod 17 when excessivepressure is appliedwhich a pressure might result in distorting the tool.lar vlew showing the Cooperating with/the member 11 and slide. rod 17isa relatively movable or lower member 27, slidablyrmounted uponthesupport ing member 10. The inember27 at its outer endhas a springengaging bracket 28 which engagesunder the Spring 20, as shown in Figure6 for releasing the valve. Themember 27 is secured to a guide member 29embracing the supporting-member 10 and is pivotally connected to-one endof the link 30,the other end of which is pivotally cone,

nected at 31 to one end of the hand operated lever 32 fulcrumed on a pin33 carried by the support 10. Accordingly, when the lever is loweredfrom the position shown in Figure 1 to the position shown in Figure 6,the lower member 27 is raised and the spring 20 is compressed while thevalve 19 is held down for permitting the removal of the valve key 21 andthe release of the valve 19. When the lever 32 is" moved upwardly thespring 20 is permitted to expand. It will be understood, of course, thatafter the Valve. key 21 is removed the valve 19 may be removed. Movablewith the lever 32 is a ratchet wheel 35 with which a pivotally mountedtwo toothed pawl 36 cooperates.

I The pawl is connected by a a ring 37 to a hand lever 38 pivotallymounted upon the support 10, the spring 37 being anchored at 45intermediateits ends.

As shown in Figure 1, the hand lever 38 has been moved into one extremeposition wherein its lip 39 engages the support 10- for yieldablyholding the pawl 36 inoperative position with respect to the ratchetwheel 35. As shown in Figure l the hand lever 38 has been moved to itsother extreme position wherein its upper portion engages the support 10for yieldably holding the spring pressed pawl 36 in a neutralposition.By means of this arrangement a mechanic using the tool may have only onehand applied to the tool and have his other hand free to guide the lowerarm or fork 28 of the member 27 as the spring 20 is being expanded aftercollar key 21'has' been set in place on the valve stem.

It .will be noted that one end of the slide rod 17 is provided with asemi-spherical or curved head 40 which is'used in placing the valvespring prior to the insertion of the valve' as shown particularly inFigure 7. In said. figure it will be noted that the slide rod 17 hasbeen reversed from its position shown in Figures 1 and 6 and that therounded end 40 engages the valve guide 41' It will be appreciated thatduring the place ment'of, the spring 20 before the valve is set inposition, it is necessary that the valve spring lifter be pivoted aboutthe curved head 40. Were this headnot curved, the valve guide 41 Will beburred or otherwise damber 27 again may belowered for permitting thespring to expand and for locking the valve in'position. The Wedgelockingmember 23 is prevented from falling out of the enlarged head 16 at alltimes because it is slightly tapered downwardly from its unthreaded toitsthreaded end.

By means of this valve spring lifter the objects of this invention areaccomplished.

It is my intention to cover all modifications falling within the spiritand scope of the folowing claims.

I claim:

1. A valve spring lifter comprising supported relatively movablemembers, one of said members being engageable underthe spring, a rodslidably mounted in said other member having one end thereof engageablewith the valve for holding the latter down when the spring is beingcompressed, means for moving said members relatively to each other forcompressing the spring for releasing the valve, and a slotted boltextending through one of said members for receiving and releasably andfrictionally locking said rod whereby a quick slidable adjustment ofsaid rod may be made for operation on valves varying in length and toprevent distortion of said members due to excessive strain whichotherwise wvorrld be transmitted through said slidably mounted rod.

2. A valve spring lifter comprising supported relatively movablemembers, oneof said members being engageable under the spring, and a rodslidably mounted in said other member having one end thereof engageablewith the valve for holding the latter down when the spring is beingcompressed, the other end of said rod'being rounded for engagement withthe valve guide for replacing the spring in the motor when'the valve isremoved, said rounded end acting as a pivot for the valve liftermechanism forswinging the spring into position.

3. A valve spring lifter comprising supported relatively movablemembers, one of said members being engageable under the spring, a rodslidably mounted in said other member having one end thereof engageablewith the valve for holdingthe latter down when the spring is beingcompressed, the other end of said rod being rounded for engagement withthevalve guide for replacingthe spring in the motor when the valve isremoved, said rounded end acting asa pivot for the valve liftermechanism for swinging the spring into position, and means forreleasably lockingsaid rod whereby'a quick slidceble adjustment of saidrod may be ma e.

' 4;."A valve spring. lifter. comprising sup ported relatively movablemembers, one of said members being engageable under the spring, arodadjustably mounted in said other member having one end thereofengageable with the valve for holding the latter down when the spring.is being compressed, the'other end of said rod being rounded topivotally engage the valve guide to prevent injury to the latter as thevalve spring is swung back into position when the valve is removed.

5. A valve spring liftercomprising supported relatively movable members,one of said members being engageable under the spring, and a rod mountedin said other member having one end thereof curved for pivotalengagement with the valve guide to prevent injury to the latter as thespring is swung into place before the valve is inserted.

6. A valve spring lifter comprising supported relatively movablemembers, one of said members being engageable under the spring, a rodslidably mounted in said other member having one end thereof engageablewith the valve for holding the latter down when the spring is beingcompressed, means for moving said members relatively to each other forcompressing the spring for releasing the valve, means for releasablylocking said rod whereby a quick slidable adjustment of said rod may bemade for operation on valves varying in length, and means normally toprevent slippage of said slide rod when the latter is released.

7. A valve spring lifter comprising supported relatively movablemembers, one of said members being engageable under the spring, a rodslidably mounted in said other member having one end thereof engageablewith the valve for holding the latter down when the spring is beingcompressed, means for moving said members relatively to each other forcompressing the spring for releasmg the valve, a slotted bolt extendingthrough one of said members for receiving and releasably locking saidrod whereby a quick slidable adjustment of said rod may be made foroperation on valves varying in length, and a spring associated with saidbolt normally to prevent slippage thereof with the valve for holding thelatter down when the spring is being compressed, means for moving saidmembers relatively to each other for compressing the spring forreleasing the valve, and means normally locking said rod in adjustedposition but which will permit a slippage thereof under excessivepressure to prevent distortion of the tool.

9. A valve spring lifter comprising supported relatively movablemembers, one of said members being engageable under the spring, theother member being operatively associated with the valve for holding thelatter down when the spring is being compressed, said latter memberbeing reversible in position to vary the normal vertical distancebetween said members to adapt the lifter for wider use.

Signed at Chicago, Illinois, this 2nd day of September, 1926.

OTTO BLOMBERG.

